Liquid level controllers are electronic devices designed to monitor and regulate the level of liquids within tanks, vessels, or sumps. Their primary function is to ensure that the liquid level remains within specified limits, preventing overfilling or running dry. These controllers typically operate by using sensors to detect liquid levels and then send signals to a control system, which can then open or close valves, start or stop pumps, or trigger alARMs as needed. The main characteristics of these controllers include their ability to provide precise measurements, robustness in various industrial environments, and the capability of automating liquid handling processes to ensure efficiency and safety.
These components are widely applied in industries such as water treatment, chemical manufacturing, food and beverage production, and oil and gas, where maintaining the correct liquid level is critical for operational continuity and safety. Liquid level controllers come with features like adjustable set points, remote monitoring, and compatibility with various types of liquids, catering to the diverse needs of these industries. Some of the notable manufacturers specializing in the production of liquid level controllers include Siemens, Honeywell, Omron, Emerson, and Endress+Hauser.